.keys__container {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
}

.keys__key {
  margin-left: 15px;
  width: 85px;

  background: #fdfdfd;
  border: 2px solid #000;
  padding: 10px;
  text-align: center;
  line-height: 20px;
  text-transform: uppercase;
  transition: all 0.15s;
  cursor: pointer;
}

.keys__key:first-child {
  margin-left: 0;
}

.keys__key--playing {
  transform: scale(1.1);

  border: 2px solid #ffc600;
  box-shadow: 0 0 10px #ffc600;
}

.keys__sound {
  font-size: 0.8rem;
  color: #ffc600;
}

kbd {
  display: block;
  font-size: 20px;
}